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<table width="100%" summary="page for ruspini"><tr><td>ruspini</td><td style="text-align: right;">R Documentation</td></tr></table>

<h2>Ruspini Data</h2>

<h3>Description</h3>

<p>The Ruspini data set, consisting of 75 points in four groups that is
popular for illustrating clustering techniques.
</p>


<h3>Usage</h3>

<pre>data(ruspini)</pre>


<h3>Format</h3>

<p>A data frame with 75 observations on 2 variables giving the x and y
coordinates of the points, respectively.
</p>


<h3>Source</h3>

<p>E. H. Ruspini (1970)
Numerical methods for fuzzy clustering.
<em>Inform. Sci.</em> <b>2</b>, 319&ndash;350.
</p>


<h3>References</h3>

<p>see those in <code>agnes</code>.
</p>


<h3>Examples</h3>

<pre>
data(ruspini)

## Plot similar to Figure 4 in Stryuf et al (1996)
## Not run: plot(pam(ruspini, 4), ask = TRUE)


## Plot similar to Figure 6 in Stryuf et al (1996)
plot(fanny(ruspini, 5))
</pre>


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